Low clarity levels from 2017 caused by record drought and then record rains and high temperatures don’t negate progress on clarity overall.

The National Park Service has a new tool in its fight to suppress a non-native species, lake trout, in Yellowstone Lake: LiDAR optimized for lakes.

After many walleye were seen on an underwater camera in Lake Erie’s Presque Isle Bay, a biologist explains walleye numbers and monitoring in the lake.

The annual monitoring report on Mirror Lake in upstate New York reveals that salt levels are still a problem despite reduced local use of road salt.